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<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <h1>a页面</h1>
    <!-- a页面需要跳转到b页面且带参数 a=10 b=20 -->
    <button>点击跳转到b页面</button>
    <script>
        var a = 10;
        var b = 20;
        document.getElementsByTagName("button")[0].onclick = function(){
            window.location.href = "./b.html?a="+a+"&b="+b;;
        }



    </script>
</body>
</html>